/*1. the header start */
.header{
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 1180px;
    height: 60px;
    margin: 0 auto;
}
.header p{
    font-family: 微软雅黑;
}
.header h1{
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translateX(-50%) translateY(-50%);
    z-index: 10;
    width: 160px;
    height: 110px;
    background-color: #fff;
    text-align: center;
    line-height: 110px;
    border-radius: 50%;
    font-weight: 700;
}
.header input{
    width: 180px;
    height: 36px;
    border-radius: 18px;
    outline: none;
    border: 1px solid #1b1b1b;
    text-indent: 10px;
    /* 可以影响光标的大小 */
    font-size: 20px; 
}
.header input::placeholder{
    font-size: 24px;
}
/*1. the header end */